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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        var dx={
            name:'赵玉真',
            age:19,
            xb:'男'
        }
        for(var k in dx){
            console.log(k); //k 输出的得到的是  属性名
            console.log(dx[k]); //dx[k]得到的是  属性值
        }
    </script>
</body>
</html>